Just went out to measure the top, which took a bit of digging as it is about
6 inches below ground level. Looks to be 4 feet by 5 feet by 5 1/2 feet
deep.
Soil is sandy loam to 3 feet, then iron ore clay below.
Keith NM5G
-----Original Message-----
From: Joe Subich, K4IK [mailto:k4ik@subich.com]
Sent: Thursday, October 21, 2004 1:57 PM
To: keith@dutson.net; 'TowerTalk'
Subject: RE: [TowerTalk] elevated anchor guy points
> Interesting point. The block that is underground is approximately 3
> feet wide and 5 feet long (in direction of guy) if memory serves.
> Anybody on this list that can figure the lateral force required to tip
> this block over from a pipe extending five feet vertically from the
> center?
What is the soil's bearing capacity and how deep is the top of the concrete
block? You have several components of force:
1) the force required to tip over the block if it was
setting on the surface of the ground
2) the force required to rip the back half of the block
through the cone of soil on top of it
3) the force required to compress the soil below the
front half for the block (to allow the back half
to raise)
4) the force required to drag the block forward through
the soil
The last three require knowledge of the soil characteristics.
73,
... Joe, K4IK
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